Mercurial > hg
annotate tests/test-obsolete-changeset-exchange.t @ 24545:9e0c67e84896
json: implement {tags} template
Tags is pretty easy to implement. Let's start there.
The output is slightly different from `hg tags -Tjson`. For reference,
the CLI has the following output:
[
{
"node": "e2049974f9a23176c2addb61d8f5b86e0d620490",
"rev": 29880,
"tag": "tip",
"type": ""
},
...
]
Our output has the format:
{
"node": "0aeb19ea57a6d223bacddda3871cb78f24b06510",
"tags": [
{
"node": "e2049974f9a23176c2addb61d8f5b86e0d620490",
"tag": "tag1",
"date": [1427775457.0, 25200]
},
...
]
}
"rev" is omitted because it isn't a reliable identifier. We shouldn't
be exposing them in web APIs and giving the impression it remotely
resembles a stable identifier. Perhaps we could one day hide this behind
a config option (it might be useful to expose when running servers
locally).
The "type" of the tag isn't defined because this information isn't yet
exposed to the hgweb templater (it could be in a follow-up) and because
it is questionable whether different types should be exposed at all.
(Should the web interface really be exposing "local" tags?)
We use an object for the outer type instead of Array for a few reasons.
First, it is extensible. If we ever need to throw more global properties
into the output, we can do that without breaking backwards compatibility
(property additions should be backwards compatible). Second, uniformity
in web APIs is nice. Having everything return objects seems much saner than
a mix of array and object. Third, there are security issues with arrays
in older browsers. The JSON web services world almost never uses arrays
as the main type for this reason.
Another possibly controversial part about this patch is how dates are
defined. While JSON has a Date type, it is based on the JavaScript Date
type, which is widely considered a pile of garbage. It is a non-starter
for this reason.
Many of Mercurial's built-in date filters drop seconds resolution. So
that's a non-starter as well, since we want the API to be lossless where
possible. rfc3339date, rfc822date, isodatesec, and date are all lossless.
However, they each require the client to perform string parsing on top of
JSON decoding. While date parsing libraries are pretty ubiquitous, some
languages don't have them out of the box. However, pretty much every
programming language can deal with UNIX timestamps (which are just
integers or floats). So, we choose to use Mercurial's internal date
representation, which in JSON is modeled as float seconds since UNIX
epoch and an integer timezone offset from UTC (keep in mind
JavaScript/JSON models all "Numbers" as double prevision floating point
numbers, so there isn't a difference between ints and floats in JSON).
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Tue, 31 Mar 2015 14:52:21 -0700 |
parents | fab9dda0f2a3 |
children | f20533623833 |
rev | line source |
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1 Test changesets filtering during exchanges (some tests are still in |
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2 test-obsolete.t) |
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3 |
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4 $ cat >> $HGRCPATH << EOF |
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5 > [experimental] |
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6 > evolution=createmarkers |
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7 > EOF |
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8 |
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9 Push does not corrupt remote |
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10 ---------------------------- |
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11 |
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12 Create a DAG where a changeset reuses a revision from a file first used in an |
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13 extinct changeset. |
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14 |
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15 $ hg init local |
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16 $ cd local |
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17 $ echo 'base' > base |
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18 $ hg commit -Am base |
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19 adding base |
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20 $ echo 'A' > A |
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21 $ hg commit -Am A |
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22 adding A |
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23 $ hg up 0 |
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24 0 files updated, 0 files merged, 1 files removed, 0 files unresolved |
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25 $ hg revert -ar 1 |
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26 adding A |
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27 $ hg commit -Am "A'" |
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28 created new head |
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29 $ hg log -G --template='{desc} {node}' |
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30 @ A' f89bcc95eba5174b1ccc3e33a82e84c96e8338ee |
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31 | |
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32 | o A 9d73aac1b2ed7d53835eaeec212ed41ea47da53a |
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33 |/ |
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34 o base d20a80d4def38df63a4b330b7fb688f3d4cae1e3 |
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35 |
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36 $ hg debugobsolete 9d73aac1b2ed7d53835eaeec212ed41ea47da53a f89bcc95eba5174b1ccc3e33a82e84c96e8338ee |
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37 |
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38 Push it. The bundle should not refer to the extinct changeset. |
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39 |
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40 $ hg init ../other |
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41 $ hg push ../other |
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42 pushing to ../other |
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43 searching for changes |
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44 adding changesets |
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45 adding manifests |
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46 adding file changes |
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47 added 2 changesets with 2 changes to 2 files |
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48 $ hg -R ../other verify |
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49 checking changesets |
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50 checking manifests |
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51 crosschecking files in changesets and manifests |
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52 checking files |
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53 2 files, 2 changesets, 2 total revisions |
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54 |
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55 Adding a changeset going extinct locally |
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56 ------------------------------------------ |
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57 |
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58 Pull a changeset that will immediatly goes extinct (because you already have a |
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59 marker to obsolete him) |
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60 (test resolution of issue3788) |
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61 |
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62 $ hg phase --draft --force f89bcc95eba5 |
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63 $ hg phase -R ../other --draft --force f89bcc95eba5 |
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64 $ hg commit --amend -m "A''" |
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65 $ hg --hidden --config extensions.mq= strip --no-backup f89bcc95eba5 |
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66 $ hg pull ../other |
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67 pulling from ../other |
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68 searching for changes |
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69 adding changesets |
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70 adding manifests |
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71 adding file changes |
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72 added 1 changesets with 0 changes to 1 files (+1 heads) |
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73 (run 'hg heads' to see heads, 'hg merge' to merge) |
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74 |
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75 check that bundle is not affected |
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76 |
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77 $ hg bundle --hidden --rev f89bcc95eba5 --base "f89bcc95eba5^" ../f89bcc95eba5.hg |
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78 1 changesets found |
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79 $ hg --hidden --config extensions.mq= strip --no-backup f89bcc95eba5 |
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80 $ hg unbundle ../f89bcc95eba5.hg |
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81 adding changesets |
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82 adding manifests |
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83 adding file changes |
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84 added 1 changesets with 0 changes to 1 files (+1 heads) |
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85 (run 'hg heads' to see heads) |